CVE-2025-64781
Unknown
Unknown - Not Provided
Open Redirect Vulnerability in GroupSession Versions Before
Vulnerability report for CVE-2025-64781, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2025-12-12
Last updated on: 2026-02-17
Assigner: JPCERT/CC
Description
Description
In GroupSession Free edition prior to ver5.7.1, GroupSession byCloud prior to ver5.7.1, and GroupSession ZION prior to ver5.7.1, "External page display restriction" is set to "Do not limit" in the initial configuration. With this configuration, the user may be redirected to an arbitrary website when accessing a specially crafted URL.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| groupsession | groupsession | to 5.7.1 (exc) |
| groupsession | groupsession | to 5.7.1 (exc) |
| groupsession | groupsession | to 5.7.1 (exc) |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-1188 | The product initializes or sets a resource with a default that is intended to be changed by the product's installer, administrator, or maintainer, but the default is not secure. |
